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Cisco IE 3000 Switch Software Configuration Guide
OL-13018-03
Chapter 37 Configuring IPv6 Host Functions
Understanding IPv6
The dual IPv4 and IPv6 templates allow the switch to be used in dual stack environments.
•
If you try to configure IPv6 without first selecting a dual IPv4 and IPv6 template, a warning message
appears.
•
In IPv4-only environments, the switch applies IPv4 QoS and ACLs in hardware. IPv6 packets are
not supported.
•
In dual IPv4 and IPv6 environments, the switch applies IPv4 QoS and ACLs in hardware.
•
IPv6 QoS and ACLs are not supported.
•
If you do not plan to use IPv6, do not use the dual stack template because this template results in
less TCAM capacity for each resource.
For more information about IPv4 and IPv6 protocol stacks, see the “Implementing IPv6 Addressing and
Basic Connectivity” chapter of
Cisco IOS IPv6 Configuration Library
on Cisco.com.
Static Routes for IPv6
Static routes are manually configured and define an explicit route between two networking devices.
Static routes are useful for smaller networks with only one path to an outside network or to provide
security for certain types of traffic in a larger network.
For more information about static routes, see the “Implementing Static Routes for IPv6” chapter in the
Cisco IOS IPv6 Configuration Library
on Cisco.com.
SNMP and Syslog Over IPv6
To support both IPv4 and IPv6, IPv6 network management requires both IPv6 and IPv4 transports.
Syslog over IPv6 supports address data types for these transports.
SNMP and syslog over IPv6 provide these features:
•
Support for both IPv4 and IPv6
•
IPv6 transport for SNMP and to modify the SNMP agent to support traps for an IPv6 host
•
SNMP- and syslog-related MIBs to support IPv6 addressing
•
Configuration of IPv6 hosts as trap receivers
For support over IPv6, SNMP modifies the existing IP transport mapping to simultaneously support IPv4
and IPv6. These SNMP actions support IPv6 transport management:
•
Opens User Datagram Protocol (UDP) SNMP socket with default settings
•
Provides a new transport mechanism called
SR_IPV6_TRANSPORT
•
Sends SNMP notifications over IPv6 transport
•
Supports SNMP-named access lists for IPv6 transport
•
Supports SNMP proxy forwarding using IPv6 transport
•
Verifies SNMP Manager feature works with IPv6 transport
For information on SNMP over IPv6, including configuration procedures, see the “Managing Cisco IOS
Applications over IPv6” chapter in the
Cisco IOS IPv6 Configuration Library
on Cisco.com
.
For information about syslog over IPv6, including configuration procedures, see the “Implementing
IPv6 Addressing and Basic Connectivity” chapter in the
Cisco IOS IPv6 Configuration Library
on
Cisco.com.